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High color strength and excellent tinting power for consistent, vibrant red-brown shades.
Outstanding lightfastness and weather resistance, ensuring long-term color stability in outdoor applications.
Optimized particle size distribution for superior dispersion and rheological behavior in aqueous and solvent-based systems.
Low oil absorption for improved formulation efficiency and enhanced pigment loading capacity.
Non-toxic, environmentally compatible, and compliant with major global regulatory frameworks including REACH and RoHS.
Architectural and industrial coatings, including façade paints and protective primers.
Cement-based products such as colored concrete, mortars, and tile grouts.
Plastics coloring for construction profiles, agricultural films, and technical components.
Printing inks for packaging and security applications requiring durable, non-fading pigmentation.
Specialty flooring systems including epoxy and polyurethane decorative screeds.
| Chemical Type | Synthetic α-Fe₂O₃ (Hematite) |
| Product Form | Fine, free-flowing powder |
| Appearance | Red-brown powder with uniform hue |
| Primary Applications | Coatings, construction materials, plastics, inks |
| Key Features | High opacity, UV-stable, alkali-resistant |
| Benefits | Consistent batch-to-batch performance, easy wetting and dispersion |
| pH (10% aqueous suspension) | 6.5 – 8.5 |
| Volatile Matter (105°C, 2 h) | ≤ 0.5 wt% |
Q1: What is the primary chemical composition and crystal structure of Bayferrox 4130?
A: Bayferrox 4130 is a synthetic iron(III) oxide pigment based on hematite (α-Fe₂O₃), produced via the thermal decomposition of iron sulfate. It exhibits a well-defined rhombohedral crystal structure, contributing to its high color strength, excellent lightfastness, and thermal stability.
Q2: Is Bayferrox 4130 suitable for use in water-based coatings and cementitious systems?
A: Yes — Bayferrox 4130 is specifically engineered for excellent dispersibility and long-term stability in both aqueous environments and alkaline matrices such as cement, mortar, and stucco. Its surface treatment ensures minimal pH sensitivity and reduced flocculation in high-pH applications.
Q3: How does Bayferrox 4130 compare to natural iron oxides in terms of color consistency and performance?
A: Unlike natural iron oxides, Bayferrox 4130 offers superior batch-to-batch reproducibility, narrower particle size distribution, and higher tinting strength due to its controlled synthesis process. This results in more predictable color development and improved opacity in demanding architectural and industrial applications.
Q4: Can Bayferrox 4130 be used in heat-sensitive polymer systems?
A: Yes — Bayferrox 4130 demonstrates excellent thermal stability up to approximately 800 °C in air, making it compatible with most thermoplastic and thermoset processing conditions, including extrusion and injection molding, without significant color shift or degradation.
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E-mail: wangxingqiang@ericwchem.com
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